Tablet PC sales continued to grow worldwide, Apple's share fell slightly.According to data from market research firm ,IDC , the sales of world's Tablet PC from first quarter of 2011 to the third quarter soared, at the second-quarter, sales was 13.6 million units, up by 303.8 percent, at the third-quarter sales was 18.1 million units, up by 264.5%. IDC also expects this year will be a good harvest for tablet computers, global sales is expected to reach 63.3 million units.As to Ipads of Apple,at the second-quarter,its market share in global tablet PC market was 68.3%, at the third quarter it fell to 61.5%. IDC predicts that Android in the fourth quarter, the Tablet PC market share will reach 40.3%, Apple iPad's market share will decline to 59%, the market share of both in the Tablet PC market share is totally up to 99.3%.In 2010, it can be said that Apple dominated the tablet PC market, but in the face of the unknown areas of temptation, many other brands have maintained a wait and see attitude. In 2011, the traditional PC vendors, telecommunications companies, and even a small digital and accessories manufacturers have started to test the level of board computer, the rapid expansion of markets, brands and products involved began to shoot up.According to statistics of ZDC, one hundred brands in China has joined the Tablet PC market, and the number of products get nearly six hundred models.Although in addition to Apple, actually the brands get the real profit in the Tablet PC market is not much, HP TouchPad is off production after 48 days low-cost marketing, Samsung is of the market in GalaxyTab after patent war with Apple,BlackBerry PlayBook positioning at the business market has weak performance, and the Amazon KindleFire still need more work - but that does not prevent other companies to enter this market.In 2012, China Tablet PC market will continue expansion, more brands and manufacturers are promoting their own products.